Type-writing machine



(No Model.)

A. T. BROWN. TYPE WRITING MACHINE.

No. 445,850. Patented Jan. 27, 1891.

Unrrnn TATES PATENT OFFICE.

ALEXANDER T. BROYVN, OF SYRACUSE, NElY YORK.

TYPE-WRlTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 445.350, dated January27, 1891.

Application filed September 25, 1890. Serial No. 366,136. (No model.)

To aZZ whom it In/0 y (L'DIMIH'IL:

Be it known that I, ALEXANDER T. BROWN, residing at Syracuse, in thecounty of 011011- daga and State of New York, have invented certain newand useful Improvements in Type-\Vriting-Machines, of which thefollowing is a specification, reference being bad therein to theaccompanying drawings.

This invention relates to the paper-guides of type-writing machines.

The object of the invention is to produce an improved device for guidingthe sheet or sheets of paper around the roller or platen in applyingpaper to said roller or platen, so called.

Figure l is a cross-section of the paper-roll of a type-writing machine,showing the ap on attached to the cradle of said roll, one of thepaper-clamps, and. my improved paper-guide finger in retracted position.Fig. 2 is a similar view with clamp omitted, showing the guide-fingerextended; Fig. 3, a side view of finger, and Fig. 4 a plan of block andpart of its supporting-rod.

A indicates the roller; 13, a part of the eradle; O, the apron, which isarranged as usual with reference to the roll. The lower edgeD of theapron is preferably a springclamp for the paper. A metallic strip E mayclasp the edge of the paper. A red F extends from end to end of theroller or carriage and in front of the ro1l,as usual in type-writingmachines. A perforated block H is carried by red E, and may be held inadjusted position on the red by a set-screw 71/, or may be permanentlyfixed about midway of the rod and keyed or splined so as not to rotateon the bar. The block H has a born or upward extension I, which e.\'-tension is curved along a line concentric with the roll A. The horn orextension I may be integral with block ll or may be a separate piecefirmly secured to the block. The block II is perforated or slotted in acurved direction concentric with the roll, and in this slot the curvedbar l of the finger M has a sliding bearing. The upper end of finger Mis turned out, and the outwardly-turned arm 0 surrounds the horn I andserves both as a support and an operating-handle for the finger. Aspiral spring S surrounds the born I between the block H and the arm 0of the finger and serves to retract the finger from its extendedposition. The bars L and M are connected by studs a n, which act asstops to the movement of the finger. As shown in Fig. l, the finger M isretracted or drawn back, so that it does not cross the bottom of theroller where the type are to strike. In applying a sheet of paper to theroller the paper is liable to bulge in the middle, and thus annoy anddelay the operator. To avoid this the finger M is extended or moved inthe direction of the circumference of the roller and in a curveconcentric with the surface of the roller. This carries the lower end ofthe finger across the open space under the roller where the printingcharacters usually strike, forming a bridge across said space andserving to guide the paper across the same and around the roller. Thefinger, when in operative position, may extend as far as the front edgeof the apron-clamp D, or beyond the same. Said clamp D is preferablythrown a little away from the roller in applying the paper in mannerwell known in this art. As soon as the finger M is released it will bepressed back by the spring S. As the distance from the surface of theroll A to the inner face of finger M is the same on any radial line andin any position of the finger, the finger forms a convenient andaccurate guide for the edge of the paper around the roll, and as thefinger moves in a curve concentric with the surface of the roll it maybe movedto any distance in its circular path without clamping the paper.The face of the finger toward the roll extends at least as far as theinner surface of the block H to afford a smooth guide-surface for theedge of the sheet.

It will be understood that the connection of the curved finger M to itssupport may be made in other manner than by means of the parallel bar L.l have used this construction and find it excellent; but otherequivalent constructions may be adopted.

What I claim isl. The combination, with the paper-roll or cylindricalplaten of a type-writing machine, of a rod parallel therewith and acurved finger carried by said rod about centrally of the cylindricalplaten and movable in the direction of the circumference of the roll andconcentric therewith, substantially as described.

The combination, with the paper-roll of a type-Writing machine, of a rodparallel therewith, a grooved block on said rod, and aenrved fingersupported in the groove in the block and movable circumferentially ofthe roll and parallel with the surface thereof, substantially asdescribed. I

3. The combination, with the roller of a type-writing machine, of a rodparallel therewith, a block on the rod, a curved finger mounted inslidingbearings in said block and moving circumferentially in thedirection of the circumference of the roll and parallel with theperiphery thereof, and a spring bearing on said finger to retractthesame, substantially as described.

4. The paper-roll, the rod parallel therewith and having a curved horn,a curved finger having hearings in the block and on the horn, and aspring surrounding the curved horn and bearing against the curvedfingers, substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

ALEXANDER '1. BROWN.

Witnesses:

WILBERT L. SMITH, LORAIN H. CURTIS.

